Christine Brennan's Best Seat in the House: Price doubled?

I just finished reading Christine Brennan's Best Seat in the House: A Father, a Daughter, a Journey Through Sports" and posted a review today. Out of curiosity, I went over to Amazon to see what the reviews said there and was surprised to see that the hardcover edition has a list price of $53.00 and is discounted to $42.40. I checked at BN, and the price is the same over there.

This is the same book I have (9780743254366). The stated list price is $26.00. (I got my copy at paperbackswap for one credit, so I didn't even pay that.)

Does anyone have any idea what's going on with the price of this book? I can't think there's suddenly so much demand that the price doubled.

edited to fix the touchstone

I checked the publisher's website and it's showing a list price of $53 as well. Seems awfully high for that sort of book!

Powell's is discounting it to $20, but every other site I looked at has it at list price or upwards of $40.

Weird.